Effects of Planting Density and Row Spacing on Canopy Apparent Photosynthesis of High-Yield Summer Corn Light distribution in wheat population and its effect on leaf photosynthetic rate under raised-bed planting method Physiological and Ecological Effects of Crimpy Leaf Character in Rice (Oryza sativa L.) Ⅰ. Leaf Orientation, Canopy Structure and Light Distribution Canopy Characteristics and Its Correlation with Photosynthesis of Super High-Yielding Hybrid Cotton Biaoza A1 and Shiza 2 Canopy light distribution and its correlation with photosynthetic production in superhigh yielding cotton fields of Xinjiang, Northwest China